Screw Pump Module For The Extrusion Of Plastic Materials

A screw pump module for extrusion of plastic materials, comprising:

• a drive motor;
• a body with an inlet and an outlet for molten plastic material;
• a hollow cylinder with an inlet and an outlet;
• a screw with a helical thread around a circumference of the screw;
• a connection conduit between the inlet of the hollow cylinder and the inlet of the body;
• or else
• a connection conduit between the outlet of the hollow cylinder and the outlet of the body;
• wherein said screw is rotated by said drive motor,
• wherein inside said hollow cylinder said screw with the helical thread rotates;
• wherein the molten plastic material enters from the inlet of the hollow cylinder and, following the rotation of said screw with the helical thread, exits from the outlet of said hollow cylinder;
• wherein said inlet of the body and said outlet of the body is at a common end of said body, and preferably with a common main axis;
• wherein inside said body is said connection conduit through which the molten plastic material that enters from the inlet of the body reaches the inlet of the hollow cylinder;
• or else through said connection conduit the molten plastic material leaving the hollow cylinder reaches the outlet of the body;
• and
• wherein said connecting conduit is positioned with an axis therof substantially parallel to a main axis of the screw.